import pygame

# 初始化pygame（只需一次）
pygame.init()
screen = pygame.display.set_mode((600, 600))  # 修正括号
pygame.display.set_caption('五子棋-EduCoder')
space = 20
cell_size = 40
cell_num = 15
chess_arr = []
flag = 1
game_state = 1


def get_one_dire_num(lx, ly, dx, dy, m):
    tx = lx
    ty = ly
    s = 0
    while True:
        tx += dx
        ty += dy
        if tx < 0 or tx >= cell_num or ty < 0 or ty >= cell_num or m[ty][tx] == 0:
            return s
        s += 1


def check_win(chess_arr, flag):
    m = [[0] * cell_num for _ in range(cell_num)]
    for x, y, c in chess_arr:
        if c == flag:
            m[y][x] = 1
    lx = chess_arr[-1][0]
    ly = chess_arr[-1][1]
    dire_arr = [[(-1, 0), (1, 0)], [(0, -1), (0, 1)],
                [(-1, -1), (1, 1)], [(-1, 1), (1, -1)]]
    for dire1, dire2 in dire_arr:
        dx, dy = dire1
        num1 = get_one_dire_num(lx, ly, dx, dy, m)
        dx, dy = dire2
        num2 = get_one_dire_num(lx, ly, dx, dy, m)
        if num1 + num2 + 1 >= 5:
            return True
    return False


# 主循环
while True:
    # 事件处理
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()
        if game_state == 1 and event.type == pygame.MOUSEBUTTONUP:
            x, y = pygame.mouse.get_pos()
            xi = int(round((x - space) / cell_size))
            yi = int(round((y - space) / cell_size))
            if 0 <= xi < cell_num and 0 <= yi < cell_num:
                # 检查是否已有棋子（使用生成式提高效率）
                if not any(c[0] == xi and c[1] == yi for c in chess_arr):
                    chess_arr.append((xi, yi, flag))  # 修正append语法
                    if check_win(chess_arr, flag):
                        game_state = 2 if flag == 1 else 3
                    else:
                        flag = 2 if flag == 1 else 1

    # 绘制部分
    screen.fill((204, 153, 102))  # 修正颜色参数

    # 绘制棋盘
    for i in range(cell_num):
        start_pos = (space + i * cell_size, space)
        end_pos = (space + i * cell_size, space + (cell_num - 1) * cell_size)
        pygame.draw.line(screen, (200, 200, 200), start_pos, end_pos, 1)
        start_pos = (space, space + i * cell_size)
        end_pos = (space + (cell_num - 1) * cell_size, space + i * cell_size)
        pygame.draw.line(screen, (200, 200, 200), start_pos, end_pos, 1)

    # 绘制棋子
    for x, y, c in chess_arr:
        color = (30, 30, 30) if c == 1 else (225, 225, 225)
        pos = (x * cell_size + space, y * cell_size + space)
        pygame.draw.circle(screen, color, pos, 16, 0)

    # 绘制星位（优化判断逻辑）
    star_points = [(4, 4), (10, 10), (10, 4), (4, 10), (7, 7)]
    for px, py in star_points:
        if not any(c[0] == px and c[1] == py for c in chess_arr):
            pos = (px * cell_size + space, py * cell_size + space)
            pygame.draw.circle(screen, (0, 0, 0), pos, 2, 0)

    # 显示胜利文字
    if game_state != 1:
        font = pygame.font.Font(None, 60)
        text = font.render(f"{'Black' if game_state == 2 else 'White'} Win!",
                           True, (210, 210, 0))
        screen.blit(text, (180, 280))

    pygame.display.update()